Skate-wheel.



J, NUTTALL. SKATE WHEEL.

APPLIOATION FILED JUNE 3) 1909.

Patented 0ct.'19 1909.

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ORNEY I UNITED STATES PATENT OFFICE.

JOHN NUTTALL, or outcome, MASSACHUSETTS, ASSIGNOR TO A. s. SPALDIfiFZ 1330s.,

' or JERSEY CITY, NEW messy, A tonronnrronor NEW JERSEY;

snare-W EEL.

This invention relates to the manufacture of metal wheels which are specially adapted for use in roller skates and the object of the invention is to reduce the cost bf manufacture and at the same time to produce awheel whichshall be very strong and shall have a non-slipping surface.

The invention will be more fullyexplained hereinafter with reference to the accompanyingdrawingin which it is illustrated, and in Figure 1 is a view, partly in elevation and partly in radial section, of a wheel in one of the preliminary stages of manufacture. Fig. v

2 is a similar view of the wheel itself in the final stage" of manufacture, and Fig. 3 is a view similar to Fig. 2 withthe ball cups in place. In the manufacture of the wheel there are first provided an external or rim member a and two internal members I), each of which comprises a hub flange c and a radial web (I. The external or rim member a, in its first. stage, is a plain, cylindrical shell. The two internal members 0 are alike, but reversed,so that when placed together, as shown in Fig. 1, the radial Webs (Z shallbe together. The .rim member a is of such internal diameter as to fit closely upon the radial websd 'of the Specification of Letters Patent. Application filed June'3, 1909. Serial No. 500,003. 0

' cups .9 being shown in Fig. 3 as inserted in Patented 0a. 19', 1909.

internal members. internal members, as thus formed, have been assembled, with the radial webs of the internal members centrally disposed w ith re spect to the external member a, the external member is subjected to compression in circumferential linesparallel with the plane of the radial webs but laterally offset with re spect thereto. This compression, the structural results of which are shown in Figs-2 andB, ac'com lishes two urposes. First, it

forms in the caring sur ace of the external member two grooves e,'which reduce. very largely the liability of sidcwise slipping of the wheel when in use; and, second, it forms interiorly two ridges f, which-hold between them the radial webs d, uniting firmly'the' several parts of which the wheel'is composed. As thus formed, the wheel is ready to have the bearings applied thereto, ball the ends of the hub.

I claim'as my invention:

A skate wheel comprisin members, each having a hu flange and a radial webw reversed, and a cylindrical rim member having in its outer surface-circumferential grooves offset from theplane ofthe Whenthe external .and

two internal radial webs and on its internal surface circumferential ridges holding between them the radial webs of the internal menibers.

This specification signed and witnessed this first day ofJune A." D. 1909.

JOHN NUTTALL-.

Signed in theipresence of F. C. BREAKSPEAR, H. L. Hour. 

